This month, I present to you this incredibly useful and insightful site called Black Star Rising http://rising.blackstar.com/. Excerpt taken from their About page states:
This is a group blog featuring articles to educate professional photographers, aspiring pros, and photography buyers alike. Our stories offer advice and viewpoints on the art and business of photography, based on the personal experiences of our contributors. We give our bloggers the freedom to write about issues of interest to them. All we ask is that blog contributions address substantive issues, be at least 500 words in length, and be written from a first-person perspective.
I sincerely guarantee that ANY photographer, professional or amateur, will find a wealth of eye-opening information in this wonderful site. Go check it out and learn! http://rising.blackstar.com/